Smithsonite - Mineral Specimen donut Approximate size for 1 opal:

Approximate size for 1 opal: 1

but are not related to one another beyond their color and name

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Approximate Size of 1 piece: 11mm x 4mm x 4mm - 14mm x 9mm x 6mm

Smithsonite - Mineral Specimen donut Approximate size for 1 opal:Mined from: Tsumeb Mine area, Tsumeb, Oshikoto Region, Namibia Description: This piece shows classic botryoidal smithsonite with a vivid electric blue to turquoise color, forming rounded, grape like surfaces that flow over a contrasting brown matrix. The surface has a waxy to silky luster, with small hemispherical growths merging together into a smooth, almost liquid looking texture. Areas of exposed matrix break up the color and give the piece a more